<?php
namespace think\log\driver;

// +----------------------------------------------------------------------
// | TOPThink [ WE CAN DO IT JUST THINK ]
// +----------------------------------------------------------------------
// | Copyright (c) 2011 http://topthink.com All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: liu21st <liu21st@gmail.com>
// +----------------------------------------------------------------------

class File {
	
	protected $config = array(
			'log_time_format' 	=>  ' c ',
			'log_file_size' 	=>  2097152,
			'log_path' 			=>  '',
		);
	
	// 实例化并传入参数
	public function __construct($config = array()) {
		$this -> config = array_merge($this -> config, $config);
	}
	
	/*
	** 日志写入接口
	** @access public
	** @param string $log 日志信息
	** @param string $destination  写入目标
	** @return void
	*/
	public function write($log, $destination = '') {
		$now = date($this -> config['log_time_format']);
		
		if(empty($destination)){
			$destination = $this -> config['log_path'] . date('y_m_d') . '.log';
		}
		
		// 自动创建日志目录
		$log_dir = dirname($destination);
		
		if(!is_dir($log_dir)){
			mkdir($log_dir, 0755, true);
		}
		
		//检测日志文件大小，超过配置大小则备份日志文件重新生成
		if(is_file($destination) && floor($this -> config['log_file_size']) <= filesize($destination)){
			rename($destination,dirname($destination).'/'.time().'-'.basename($destination));
		}
		
		error_log("[{$now}] " . $_SERVER['REMOTE_ADDR'] . ' ' . $_SERVER['REQUEST_URI'] . "\r\n{$log}\r\n", 3, $destination);
	}
	
}
